void copy_extent_buffer_full(const struct extent_buffer *dst,
const struct extent_buffer *src)
{
- int i;
- int num_pages;
+ unsigned long cur = 0;
ASSERT(dst->len == src->len);
- if (dst->fs_info->nodesize >= PAGE_SIZE) {
- num_pages = num_extent_pages(dst);
- for (i = 0; i < num_pages; i++)
- copy_page(page_address(dst->pages[i]),
- page_address(src->pages[i]));
- } else {
- size_t src_offset = get_eb_offset_in_page(src, 0);
- size_t dst_offset = get_eb_offset_in_page(dst, 0);
+ while (cur < src->len) {
+ unsigned long index = get_eb_page_index(cur);
+ unsigned long offset = get_eb_offset_in_page(src, cur);
+ unsigned long cur_len = min(src->len, PAGE_SIZE - offset);
+ void *addr = page_address(src->pages[index]) + offset;
+
+ write_extent_buffer(dst, addr, cur, cur_len);
- ASSERT(src->fs_info->nodesize < PAGE_SIZE);
- memcpy(page_address(dst->pages[0]) + dst_offset,
- page_address(src->pages[0]) + src_offset,
- src->len);
+ cur += cur_len;
}
}